Stacy's Crossword Puzzle

4. a fossil fuel formed when layers of buried plants, gases, and animals.
6. the amount of technically and economically recoverable oil.
8. wastes that contain radioactive material.
9. solar thermal collector collects heat by absorbing sunlight.
11. reducing energy consumption through using less of an energy service.
14. electric generator is a device that converts mechanical energy to electrical energy.
15. connected sequence of events.
17. the heating space that utilizes the design of the house or building so as trap solar heat when necessary.
18. a cell producing an electric current directly from a chemical reaction.
19. any energy source that is an alternative to fossil fuel.

1. disaster a catastrophic nuclear accident that occurred on 26 April 1986 at the Chernobyl Nuclear Power Plant in Ukraine
2. organic matter convertible into heat, directly by burning.
3. a device that converts kinetic energy from the wind into electrical power.
5. a nuclear reaction in which two or more atomic nuclei collide.
7. is energy derived from the movement of water.
10. the heat from the Earth.
12. the main process generating nuclear energy.
13. derived from living matter of a previous geologic time and used for fuel.
16. crude oil found in rock